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Optical scanner

A scanner and optical technology, applied in the field of optical scanners, can solve the problems of driving efficiency loss, eddy current generation, etc., and achieve good driving efficiency

Inactive Publication Date: 2007-06-06
尼古拉斯·勒贝尔 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this long flux path, there is a greater potential for eddy current generation and loss of drive efficiency due to heating of the ferromagnetic material

Method used

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  • Optical scanner
  • Optical scanner
  • Optical scanner

Examples

Experimental program
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Embodiment Construction

[0016] (scanner)

[0017] The resonant optical scanner 100 of the present invention is shown in Figs. 1-4. Referring to FIGS. 1 to 2, the scanner includes base plates 1 and 2, which are connected together by a known device (for example, the bolt 17 shown in FIG. 2) to provide mechanical support for the scanner 100. The end fixing brackets 3 and 4 are installed on the opposite ends of the base plates 1 and 2. The end fixing frame is also connected to the base plates 1 and 2 through known devices (for example, the screws 16 and the recessed holes 22 shown in Figs. Alternatively, the base plates 1, 2 and the end fixing frames 3, 4 can be in one or two pieces of material (that is, the base plate 1 and the end fixing frame 3 form one piece, and the base plate 2 and the end fixing frame 4 form another piece. ) One body.

[0018] Referring to FIG. 2, the scanner 100 includes a flexible member 32 connected to the end holders 3 and 4. The flexible member includes a flexible element 11 that...

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PUM

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Abstract

An optical scanner 100 comprising stators 38, 40 spaced apart from each other but ferromagnetically coupled together; a magnet 9 positioned relative to the stators 38, 40 such that axis of symmetry of a magnetic field created by the magnet 9 is substantially equidistant from and passes in between the stators 38, 40; and a flexure element 11 positioned relative to the stators 38, 40 and the magnet 9 such that its center point substantially intersects axis of symmetry of the magnet's 9 magnetic field, wherein the flexure element 11 is not in physical contact with either the stators 38, 40 or the magnet 9. A method for oscillating an optical scanner's flexure element comprising using a magnet 9 disposed between two stators 38, 40 and beneath the flexure element 11 to create two magnetic circuits 30, 31 that are generally symmetric and coplanar with one another, wherein a portion of the circuits share a common magnetic path through the magnet 9 and remaining, non-common paths of the circuits 30, 31 through the stators 38, 40 are counter-directional relative to each other; applying electromagnetic flux to such circuits 30, 31 via stator electrical coils 5, 6 enhancing flux through one circuit 30 or 31 while impeding flux through the other circuit 30 or 31 and keeping the stator-induced flux vector through the magnet 9 unchanged; and reversing polarity of the stator-induced electromagnetic flux at a regular frequency in order to oscillate the flexure element 11.

Description

[0001] Enjoy the requirements of the application date [0002] This application claims to enjoy the filing date of U.S. Provisional Patent Application No. 60 / 583,959 filed on June 29, 2004, the entire content of which is incorporated herein by reference. Technical field [0003] The present invention is directed to an optical scanner having both a fixed magnet and a fixed drive coil. Background technique [0004] Although optical resonance scanners are well known, they generally cannot be maintained at frequencies significantly higher than 10 kHz, especially when they include large aperture mirrors, large scanning angles, and / or mirrors composed of thick materials (to maintain dynamic flatness). Straightness). Most known magnetically driven resonance scanners include a moving magnet or a moving coil as an electromagnetic circuit component that is used to generate and maintain the oscillating movement of the flexible element. Many of these scanners have a high moment of inertia ass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/182G02B26/10
CPCG02B26/105H02K33/12H02K33/16G02B26/10G02B7/1821
Inventor 尼古拉斯·勒贝尔安德里亚斯·罗斯马克·吉特林大卫·梅尔维尔
Owner 尼古拉斯·勒贝尔
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